GW 50 I've heard of it, like you cardio is critical my work is intense. Plus raising my 4 year old grandson I gotta be in fucking shape. Appreciate you man I'm going to do some research on mast sounds good. I have to say though when I was using that tren base I wanted to fuck everything and i didnt care if it was 1025 or 300 lbs lol. That shit was killing me cause I'm single lol